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Secondary iron overload is a common complication in the context of hematological diseases, as iron accumulates due to different mechanisms including chronic transfusion, increased gastrointestinal absorption, chronic hemolysis and underlying genetic defects leading to an increase in gastrointestinal absorption of iron. Since the body does not have a mechanism to excrete excess iron, it gets deposited in the heart, endocrine organs, and the liver with the latest being affected less commonly than in primary iron overload disorders like hemochromatosis. Patients with hemoglobin H disease, which is a type of α-thalassemia, are usually transfusion independent, except in occasions where an external stressful factor leads to a drop in hemoglobin and necessitates blood transfusion. Despite this, secondary iron overload is commonly encountered in these patients due to increased gastrointestinal absorption of iron. To avoid the complications associated with iron overload, these patients are usually monitored with serum ferritin, which is an inexpensive widely available method to monitor iron overload. MRI of the liver (Ferriscan) is a more sensitive and specific method to monitor these patients and avoid the long-lasting and sometimes irreversible effect of secondary iron overload. Here we present an interesting case of a patient with hemoglobin H disease, who was monitored with serum ferritin. She had a serum ferritin level considered as a borderline risk for morbidities secondary to iron overload, and an MRI of her liver (Ferriscan) showed significant iron deposition in the liver associated with increased risk of complications secondary to iron overload.

case reports in oncology

Iron Overload in a Patient with Non-Transfusion-Dependent Hemoglobin H Disease and Borderline Serum Ferritin: Can We Rely on Serum Ferritin for Monitoring in This Group of Patients?